Question
A wire is moulded into a circle of radius 21m. Then the
wire is bent and shaped into a rectangle of length 36 m. Find the area of the rectangle thus formed?Solution
Circumference of circle = Perimeter of a rectangle = 2πr = 2 × 22/7 × 21 = 132 m Perimeter of a rectangle = 2(l + b) 132 = 2(l + b) 36 + b = 66 b= 66 – 36 = 30 m ∴ Area of the rectangle = l × b = 36 × 30 = 1080 m²
If  3  12  108  x   43200
Then, 47% of (x + 72)= ?
4, 8, 24, ?, 840, 9240
52 25 27 ? 208 1648
...24Â Â Â 72Â Â Â Â 180Â Â Â Â 360Â Â Â Â Â 540Â Â Â ?
12Â Â Â Â Â Â Â Â Â Â Â Â Â 10Â Â Â Â Â Â Â Â Â Â Â Â 13Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â 18.5Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â 25.50Â Â Â Â Â Â Â ...
1331      1000            729       512       ?             216
...4 5.5 19 .5 98.5 694 6251.5
...32, ?, 41, 68, 132, 257
...729 512 343 216 125 ?
...62 123 214 341 ? 727
...
Relevant for Exams:
